The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 2009
Filed:
Dec. 29, 2006
Chang-sub Lee, Gyeonggi-do, KR;
Jeong-hyuk Choi, Gyeonggi-do, KR;
Woon-kyung Lee, Gyeonggi-do, KR;
Jai-hyuk Song, Seoul, KR;
Dong-yean OH, Seoul, KR;
Chang-Sub Lee, Gyeonggi-do, KR;
Jeong-Hyuk Choi, Gyeonggi-do, KR;
Woon-Kyung Lee, Gyeonggi-do, KR;
Jai-Hyuk Song, Seoul, KR;
Dong-Yean Oh, Seoul, KR;
Abstract
A semiconductor memory device can include select transistors and cell transistors on a semiconductor substrate. An insulation layer covers the select transistors and the cell transistors. The bit lines are in the insulation layer and are electrically connected to respective ones of the select transistors. The bit lines are arranged along at least two different parallel planes having different heights relative to the semiconductor substrate.